Abstract: Provided is a shoe with a cushion and ventilation device. The cushion and ventilation device includes an air pump having an air discharge tube provided at its one side, and an air tube having a connection pipe connecting to the air discharge tube of the air pump, and an air chamber, wherein the air pump is provided by placing an upper sheet having a cavity on a lower sheet having an intake hole, and thermally bonding circumference surfaces of the upper and lower sheets using microwave, and wherein the upper and lower sheets further comprise a sponge having contraction and restoring forces therein.

Abstract: A radial-flow turbine wheel is provided. The radial-flow turbine wheel includes a hub having an outer radius gradually increasing from a front end to a rear end, a rear periphery of the hub being radially extended in a plane generally perpendicular to a center axis, and a plurality of turbine blades formed around the hub at constant intervals. A plurality of slots is formed by inward cuts at the rear periphery of the hub between the turbine blades of the hub. The turbine wheel restrains creation and propagation of cracks due to thermal stress, as well as improving a turbine efficiency.

Abstract: Disclosed herein is a device for correcting golf swing posture. The device includes a footboard which is formed so that a foot is seated and supported thereon, and has a pair of facing locking brackets and a foot support part for supporting a foot. A support cuff is provided at an end of the footboard to support a leg, a lower surface of the support cuff, which contacts the footboard, being formed to be convex such that the support cuff rotates within a range of swing motion, the support cuff having locking recesses which are coupled to the locking brackets and a leg support part for supporting the leg. A fastening means detachably fastens the locking brackets of the footboard to the locking recesses of the support cuff. Thereby, the support cuff rotates about the fastening means at a predetermined angle as swing motion is conducted.

Abstract: A polymer for forming an organic anti-reflective coating layer between an etching layer and a photoresist layer to absorb an exposure light in a photolithography process and a composition comprising the same are disclosed. The polymer for forming an organic anti-reflective coating layer has repeating units represented by wherein, R1 is a substituted or non-substituted alky group of C1 to C5.

Abstract: The present invention relates to a linear motor guide apparatus, which comprises a linear motor stator and rotor; an up-projecting partitions, an LM (linear motor) rail and an LM (linear motor) block installed in a main base; and a main cover installed elastically in the longitudinal direction, so that the installation of the apparatus is convenient, and the whole apparatus can be reciprocally moved a certain distance stably.